A new species mutant crayfish may be set to wreak havoc on the world, but it is not because this species is some giant mutant like you would see in the movies, but rather because it is all-female and can reproduce on its own. The marbled crayfish, born to male and female slough crayfish orginally in Florida, is sold in North America but banned in the European Union.

Their mutation allows them to reproduce without needing any participation whatsoever from a male, which means the six-inch pest could create an environmental catastrophe. Just a few decades ago, Procambarus virginalis did not even exist, but now it is becoming a growing concern for environmental officials and is now officially a separate species.

The marbled crayfish can now be found in the wild in the United States, some European countries, Madagascar, and Japan. It is considered an invasive species that could create a major problem for native species, particularly in Madagascar where as many as seven species are at risk.

“Marmorkrebs, or marbled crayfish, are parthenogenetic crayfish that were discovered in the pet trade in Germany in the 1990s,” reads a Wikipedia excerpt on the species. “Procambarus fallax forma virginalis is an informal subspecies designation for marmorkrebs, and some researchers have proposed a new species designation, Procambarus virginalis. Marmorkrebs are closely related to the “slough crayfish”, Procambarus fallax. P. fallax is widely distributed across Florida, but no natural populations of marmorkrebs are known. Information provided by one of the original pet traders as to where the marmorkrebs originated was deemed “totally confusing and unreliable”. Marmorkrebs is German for “marbled crayfish”.”